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GMC Roofing & Building 15# ASTM Felt Roofing Underlayment Roll – 015-D226-GMC
Regular price $53.00Orders start at $399 — combine any items to reach the minimum. Learn more
GMC Roofing & Building 15# ASTM Felt Roofing Underlayment Roll
This is a GMC Roofing & Building 15# asphalt-saturated felt roofing underlayment manufactured to ASTM standards. It installs beneath shingles and other roof coverings as a secondary water-shedding layer. One unit is a single roll of felt underlayment.
Key Features:
- 15# felt: No. 15 weight asphalt-saturated felt underlayment.
- ASTM standard: Manufactured to an ASTM standard per the product title.
- Secondary protection: Installed under roof coverings as a secondary water-shedding layer.
- Roll format: Supplied in a roll for fast unrolling across the roof deck.
- Roofing underlayment: Designed for use beneath shingle and other sloped roof coverings.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | GMC Roofing & Building |
| Manufacturer model | 015-D226-GMC |
| Sell unit | 1 roll of felt underlayment |
| Material | Asphalt-saturated felt |
| Weight class | 15# (No. 15) |
| Standard | ASTM (per product title) |
| Intended use | Roofing underlayment beneath shingles and other roof coverings |
Coverage & How Much You Need:
Coverage per roll depends on the roll's width and length, which were not provided in the sources; size your job by dividing the roof deck area by the per-roll coverage once the roll dimensions are confirmed.
Fit and Compatibility:
Installed over the roof deck and beneath asphalt shingles or other sloped roof coverings. Starter shingles, ridge caps and fasteners are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one unit?
A: One roll of 15# ASTM felt underlayment; fasteners and roof coverings are not included.
Q: How much area does a roll cover?
A: Roll dimensions were not provided in the sources; confirm roll width and length to calculate coverage.
Q: Where does this go in the roof system?
A: It installs on the roof deck, beneath the shingles or other finished roof covering.
Q: What does 15# mean?
A: 15# refers to the No. 15 weight class of asphalt-saturated felt underlayment.
Q: Which ASTM standard applies?
A: The title states the felt is manufactured to an ASTM standard, but the specific standard number was not provided in the sources.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
No. 15 felt is the traditional choice for standard sloped shingle roofs; run it horizontally from the eaves up with proper laps, and use ice-and-water membrane at eaves and valleys where required by code. Keep rolls dry and flat before installation, and avoid working the felt when wet or windy. For low-slope or high-exposure roofs, consider a heavier or synthetic underlayment instead.
Use roof anchors, fall protection and slip-resistant footwear when installing underlayment, as felt surfaces are slippery especially when wet or dusty.
Order the GMC Roofing & Building 15# ASTM felt underlayment roll for dependable protection under your shingles.
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